产妇心力衰竭时给氧流量和氧气湿化液为()
A.2~4L/min50%乙醇
B.6~8L/min75%乙醇
C.6~8L/min50%乙醇
D.4~6L/min75%乙醇
参考答案:C
— It’s very cold here in winter. Have you _______ here?
— Not yet. I find it hard to adapt to the weather.
A.used to live
B.got used to living
C.got used to live
D.used to living
声波全波列测井采用长源距是为了()。
A、减井眼影响
B、减少钻井破碎带影响
C、使全波列显示好,以便于提取纵波、横波、斯通利波等